wr 400 cam mods

i know there is tons of threads about how to make to my wr400 run like a yz by advancing one of the cams. if anyone knows or has the info and you could please share that would be great. Thanks

i know there is tons of threads about how to make to my wr400 run like a yz by advancing one of the cams. if anyone knows or has the info and you could please share that would be great. Thanks

Go here http://motoman393.thumpertalk.com/ and look under Tech Articles/Engine/Changing a WR's cam timing to YZ timing

You might want to think about installing an 03 YZ cam to get YZ timing AND autodecompression.

Ditto to what Birddy says, the 03 YZ cam is the way to go, it's a drop in, just need to re-shim the valves.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now